MELSRV PSYCINFO DATABASES Z39.50 SERVER STATISTICS
Time period: 03/01/99 through 03/31/99
1.0 SUMMARY STATISTICS
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Per hour usage:
Time Searches Records Presented
_______________ _____________ _________________
12-2 a.m. 1,055 45,046
2-4 a.m. 369 16,140
4-6 a.m. 136 5,147
6-8 a.m. 337 12,570
8-10 a.m. 3,134 112,787
10-12 a.m. 7,991 288,725
12-2 p.m. 10,024 398,170
2-4 p.m. 11,220 454,844
4-6 p.m. 9,024 329,299
6-8 p.m. 5,307 229,217
8-10 p.m. 4,395 178,097
10-12 p.m. 2,566 101,544
__________ _____________ _________________
Total: 55,558 2,171,586
1.1 SEARCH commands
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Zero results may indicate no access to the database
Number of SEARCH commands issued by location:
Location Total
________ _____
Berkeley 252
Davis 268
Irvine 421
Los Angeles 41
Riverside 0
San Diego 1,439
San Francisco 189
Santa Barbara 195
Santa Cruz 138
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 51,251
Other - UC 815
Other-Network UC 549
_____
55,558
1.2 Records Presented
______________________
Zero results may indicate no access to the database
Number of Records Presented by location:
Location Total
________ _____
Berkeley 7,970
Davis 1,128
Irvine 8,289
Los Angeles 2,583
Riverside 0
San Diego 5,005
San Francisco 2,127
Santa Barbara 968
Santa Cruz 783
Lawrence Berkeley 0
Lawrence Livermore 0
Los Alamos 0
MELWEB 2,126,584
Other - UC 9,953
Other-Network UC 6,196
_____
2,171,586
1.3 Response time
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Search response time from receipt of search request
DLA until transmission of search response:
Average in seconds 1.9
Standard deviation in seconds 5.9
Present response time from receipt of present request
DLA until transmission of a present response:
Average in seconds 0.3
Standard deviation in seconds 0.8
2.0 PSYCINFO Database Detailed Statistics
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Median session length (minutes:seconds) 26:02
Average session length (minutes:seconds) 29:37
Longest session recorded (minutes:seconds) 262:26
Average number of searches completed per session 0.0
Retrievals per search - median 7.0
Retrievals per search - average 1007.0
Retrievals per search - standard deviation 8189.4
Percent of searches completed with 0 results 27.4%
Percent of searches entered that are long 0.3%
Percent of long searches completed
(includes partial results) 100%
Commands entered, by type, excluding errors:
Total Percentage
__________ __________
SEARCH 55,557 10.8%
PRESENT 444,880 86.7%
INIT or CLOSE 12,432 2.4%
OTHER 526 0.1%
SEARCHes completed: RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By index:
PERSONAL AUTHOR 15,955 17.5% 4,609 28.9% 10 75.9 706.7
TITLE WORD 5,224 5.7% 2,067 39.6% 3 220.8 1957.7
EXACT TITLE 1,086 1.2% 686 63.2% 1 119.7 2162.2
JOURNAL 3,623 4.0% 1,693 46.7% 5 1186.4 9677.0
EXACT JOURNAL 1,602 1.8% 752 46.9% 206 13713.8 44102.9
SUBJECT 5,186 5.7% 2,506 48.3% 77 1783.3 6033.4
EXACT SUBJECT 2,305 2.5% 849 36.8% 83 926.5 4064.2
KEYWORD 30,277 33.2% 6,179 20.4% 42 1447.9 8114.7
AUTHOR AFFIL 235 0.3% 196 83.4% 9 256.1 1212.1
FORM/PUB TYPE 2,775 3.0% 780 28.1% 52 627.6 3109.7
DATE 3,682 4.0% 940 25.5% 24 373.7 1822.3
ADDED 122 0.1% 96 78.7% 6 10.8 26.3
CONFERENCE 14 0.0% 7 50.0% 269 516.1 608.7
LANGUAGE 7,912 8.7% 2,112 26.7% 86 1474.7 6183.2
ISSN 3 0.0% 2 66.7% 2 2.0 0.0
ISBN 8 0.0% 4 50.0% 3 7.8 10.9
ID NUMBER 58 0.1% 53 91.4% 1 1.4 0.9
XXS 51 0.1% 35 68.6% 1,842 9297.9 16329.3
ISN 0 0.0% 0 0.0% 0 0.0 0.0
ARTICLE 617 0.7% 150 24.3% 82 1133.4 5190.5
AT 10,322 11.3% 2,943 28.5% 63 1353.6 5913.1
Other indexes 185 0.2% 50 27.0% 194 4620.1 13011.9
RETRIEVALS PER NON-
TOTAL ZERO RESULTS ZERO RESULT SEARCHES
_____________ ______________ ______________________
% of % of
all all for Std.
No. SEARCHes No. Index Median Avg. Dev.
______ _________ ______ _______ ______ __________ _______
By number of indexes:
Multiple 20,308 36.6% 6,475 31.9% 27 1026.8 5131.1
Single 35,249 63.4% 8,760 24.9% 29 1575.8 11225.4
PRESENT commands, by type:
MARC 43.3%
OPAC 41.9%